The Attenuation of QRS Power in the Frequency Range 0.05 to 1 kHz

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F17%3A00075908" target="_blank" >RIV/00159816:_____/17:00075908 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.22489/CinC.2017.096-110" target="_blank" >http://dx.doi.org/10.22489/CinC.2017.096-110</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22489/CinC.2017.096-110" target="_blank" >10.22489/CinC.2017.096-110</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Attenuation of QRS Power in the Frequency Range 0.05 to 1 kHz

Popis výsledku v původním jazyce

The high-frequency QRS (HFQRS) signal was analyzed in four groups of subjects: healthy, patients suffering from coronary artery disease, heart transplanted patients and patients with left bundle branch block (LBBB). Subjects were measured in the supine position with a high-quality ECG system (fs=5 kHz, ADC 24 bits). The dependency of HFQRS power, maximal amplitude and HFQRS width on the passband used was analyzed. Results: The dependency between HFQRS power and frequency in logarithmic scales is nearly linear across all groups. Significant differences exist in HFQRS power attenuation in regard to frequency between groups of subjects, P&lt;0.001. This attenuation is maximal in healthy subjects -48.1 +/- 3.7 [dB per decade], minimal in LBBB -40.2 +/- 2.7. Based on significant differences between healthy and patient groups, we assume that QRS power attenuation may represent new information in ECG analysis. This parameter is independent of the choice of the analyzed frequency band. The dependency of HFQRS shape on frequency is presented by analysis of a healthy subject. Explanation of this significant dependency is a task for the future.

Název v anglickém jazyce

The Attenuation of QRS Power in the Frequency Range 0.05 to 1 kHz

Popis výsledku anglicky

The high-frequency QRS (HFQRS) signal was analyzed in four groups of subjects: healthy, patients suffering from coronary artery disease, heart transplanted patients and patients with left bundle branch block (LBBB). Subjects were measured in the supine position with a high-quality ECG system (fs=5 kHz, ADC 24 bits). The dependency of HFQRS power, maximal amplitude and HFQRS width on the passband used was analyzed. Results: The dependency between HFQRS power and frequency in logarithmic scales is nearly linear across all groups. Significant differences exist in HFQRS power attenuation in regard to frequency between groups of subjects, P&lt;0.001. This attenuation is maximal in healthy subjects -48.1 +/- 3.7 [dB per decade], minimal in LBBB -40.2 +/- 2.7. Based on significant differences between healthy and patient groups, we assume that QRS power attenuation may represent new information in ECG analysis. This parameter is independent of the choice of the analyzed frequency band. The dependency of HFQRS shape on frequency is presented by analysis of a healthy subject. Explanation of this significant dependency is a task for the future.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

30201 - Cardiac and Cardiovascular systems

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2017 COMPUTING IN CARDIOLOGY (CINC)

ISBN

—

ISSN

2325-8861

e-ISSN

2325-887X

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

IEEE COMPUTER SOC

Místo vydání

LOS ALAMITOS

Místo konání akce

Rennes

Datum konání akce

24. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000450651100082